Journal of Pathology and Translational Medicine

Ji Yun Jeong

5 Articles

Current status of cytopathology practice in Korea: impact of the coronavirus pandemic on cytopathology practice: Soon Auck Hong, Haeyoen Jung, Sung Sun Kim, Min-Sun Jin, Jung-Soo Pyo, Ji Yun Jeong, Younghee Choi, Gyungyub Gong, Yosep Chong; J Pathol Transl Med. 2022;56(6):361-369. Published online October 27, 2022; DOI: https://doi.org/10.4132/jptm.2022.09.21

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Abstract PDF Supplementary Material: Background
The Continuous Quality Improvement program for cytopathology in 2020 was completed during the coronavirus pandemic. In this study, we report the result of the quality improvement program.
Methods
Data related to cytopathology practice from each institute were collected and processed at the web-based portal. The proficiency test was conducted using glass slides and whole-slide images (WSIs). Evaluation of the adequacy of gynecology (GYN) slides from each institution and submission of case glass slides and WSIs for the next quality improvement program were performed.
Results
A total of 214 institutions participated in the annual cytopathology survey in 2020. The number of entire cytopathology specimens was 8,220,650, a reduction of 19.0% from the 10,111,755 specimens evaluated in 2019. Notably, the number of respiratory cytopathology specimens, including sputum and bronchial washing/ brushing significantly decreased by 86.9% from 2019, which could be attributed to the global pandemic of coronavirus disease. The ratio of cases with atypical squamous cells to squamous intraepithelial lesions was 4.10. All participating institutions passed the proficiency test and the evaluation of adequacy of GYN slides.
Conclusions
Through the Continuous Quality Improvement program, the effect of coronavirus disease 2019 pandemic, manifesting with a reduction in the number of cytologic examinations, especially in respiratory-related specimen has been identified. The Continuous Quality Improvement Program of the Korean Society for Cytopathology can serve as the gold standard to evaluate the current status of cytopathology practice in Korea.

Prognostic Significance of Aquaporin 5 Expression in Non-small Cell Lung Cancer: Young Min Jo, Tae In Park, Hwa Young Lee, Ji Yun Jeong, Won Kee Lee; J Pathol Transl Med. 2016;50(2):122-128. Published online February 8, 2016; DOI: https://doi.org/10.4132/jptm.2015.10.31

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10 Citations

Background
Aquaporins are water channel proteins that play a major role in the movement of water in various human tissues. Recently, it has been found that aquaporins have influence in the carcinogenesis of human malignancies. We analyzed the prognostic impact of aquaporin 5 (AQP5) in non-small lung cancer (NSCLC). Methods: Seventy-six cases of NSCLC were studied, including 44 cases of adenocarcinoma (ADC) and 32 cases of squamous cell carcinoma (SQCC). Tissue microarray was constructed and immunohistochemical staining for AQP5 was performed. Results: AQP5 was positive in 59.2% of the total enrolled NSCLCs (63.7% in ADC and 53.1% in SQCC). The difference in expression of AQP5 according to the histologic grade of the tumor was significant (p<.047), but not in a serial order. When ADC and SQCC were separately evaluated, no significant difference was observed according to the histologic grade of the tumor (p=.076 in ADC and p=.631 in SQCC). No difference was observed between AQP5 expression and other demographic data and tumor characteristics. Disease-free survival (DFS) was higher in AQP5 negative cases than positive cases in ADC (p=.047), but no significance was found in SQCC (p=.068). We were unable to find a significance between AQP5 overexpression and overall survival in either ADC (p=.210) or SQCC (p=.533). Conclusions: AQP5 expression is associated with DFS in ADC of the lung and tumor grade of NSCLC. The present study suggests that AQP5 can be a prognostic factor of NSCLC.

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The Journal of Pathology.2019; 249(2): 193. CrossRef
Anti-cancer effect of Aquaporin 5 silencing in colorectal cancer cells in association with inhibition of Wnt/β-catenin pathway
Wei Wang, Qing Li, Tao Yang, Dongsheng Li, Feng Ding, Hongzhi Sun, Guang Bai
Cytotechnology.2018; 70(2): 615. CrossRef
Knockdown of aquaporin-5 sensitizes colorectal cancer cells to 5-fluorouracil via inhibition of the Wnt–β-catenin signaling pathway
Qing Li, Tao Yang, Dongsheng Li, Feng Ding, Guang Bai, Wei Wang, Hongzhi Sun
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Marzia Del Re, Eleonora Rofi, Giuliana Restante, Stefania Crucitta, Elena Arrigoni, Stefano Fogli, Massimo Di Maio, Iacopo Petrini, Romano Danesi
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Signet-Ring Cell Carcinoma of the Distal Common Bile Duct: Report of a Case: Hyung Jun Kwon, Ghil-Suk Yoon, Yong Chul Kwon, Sang Geol Kim, Ji Yun Jeong; Korean J Pathol. 2014;48(4):315-318. Published online August 26, 2014; DOI: https://doi.org/10.4132/KoreanJPathol.2014.48.4.315

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Rare histotypes of epithelial biliary tract tumors: A literature review
Elena Sapuppo, Oronzo Brunetti, Dalila Tessitore, Giovanni Brandi, Nicola Di Giovanni, Guido Fadda, Claudio Luchini, Maurizio Martini, Davide Quaresmini, Antonio Russo, Mariacarmela Santarpia, Aldo Scarpa, Mario Scartozzi, Giovanni Tuccari, Tindara Franch
Critical Reviews in Oncology/Hematology.2023; 181: 103892. CrossRef
Primary signet-ring cell carcinoma of the extrahepatic bile duct: A case report
Chao-Bang Xie, Yang Wu, Feng Li, Kai-Fei Zhao, Rong-Shu Shi, Qiong Huang, Jin Ao, Di Ke
World Journal of Gastrointestinal Oncology.2022; 14(7): 1356. CrossRef
Duodenal Stenosis Due to Carcinoma of the Lower Bile Duct: A Case Report
Takumi Maki, Atsushi Irisawa, Kenji Notohara, Goro Shibukawa, Ai Sato, Akane Yamabe, Yoshitsugu Yoshida, Shogo Yamamoto, Nobutoshi Soeta, Takuro Saito
Clinical Medicine Insights: Case Reports.2020; 13: 117954762091945. CrossRef
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MAD2 Expression in Ovarian Carcinoma: Different Expression Patterns and Levels among Various Types of Ovarian Carcinoma and Its Prognostic Significance in High-Grade Serous Carcinoma: Po Eun Park, Ji Yun Jeong, Sun Zoo Kim, Ji Young Park; Korean J Pathol. 2013;47(5):418-425. Published online October 25, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.5.418

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Abstract PDF

Background

Mitotic arrest deficiency protein 2 (MAD2) is a key component of spindle assembly checkpoint function, which mediates cell apoptosis through microtubule kinetics. Aberrant expression of MAD2 is believed to be associated with the development of chromosome instability. MAD2 also has a signihicant role in cellular drug resistance to taxane chemotherapeutic agents.

Methods

Expression of MAD2 and p53 was investigated using immunohistochemistry in 85 cases of ovarian carcinomas. Clinicopathological data including progression-free survival were analyzed.

Results

A significant (p=.035) association was observed between the grade of serous carcinoma and the expression level of MAD2. While low-grade serous carcinoma showed a low-level expression of MAD2, high-grade serous carcinoma showed a high-level expression of MAD2. We also determined that low-level expression of MAD2 was associated with reduced progression-free survival (PFS) (p=.016) in high-grade serous carcinoma.

Conclusions

MAD2 expression in ovarian carcinoma is related to the grade of serous carcinoma and PFS of high-grade serous carcinoma. Expression level of MAD2 detected by immunohistochemistry may serve as an indicator in predicting the response of microtubule-interfering chemotherapeutic agents.

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Proteins of the mitotic checkpoint and spindle are related to chromosomal instability and unfavourable prognosis in patients with myelodysplastic syndrome
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Fine-Needle Aspiration Cytology of Low-Grade Cribriform Cystadenocarcinoma with Many Psammoma Bodies of the Salivary Gland: Ji Yun Jeong, Dongbin Ahn, Ji Young Park; Korean J Pathol. 2013;47(5):481-485. Published online October 25, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.5.481

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Abstract PDF

Low-grade cribriform cystadenocarcinoma (LGCCC) is a rare salivary gland tumor that was recently defined as a variant of cystadenocarcinoma by the 2005 World Health Orgazniation (WHO) classification system. We report cytologic findings of an unusual case of LGCCC with many psammoma bodies. A 90-year-old man presented a palpable mass on his left parotid gland. Fine-needle aspiration (FNA) cytology showed tumor cells that were arranged in clusters and dispersed individually. The tumor cells showed mild atypia and had clear or dense cytoplasm with some vacuoles. Numerous psammoma bodies were noted. After surgical resection, the histologic examination revealed a mixed solid and cystic mass showing intraductal growth with focal stromal invasion. The S-100 protein expressed in the tumor cells, but smooth muscle actin and p63 were positive only in myoepithelial cells. Although LGCCCs resemble other salivary gland tumors, differentiating LGCCC during preoperative FNA is important to avoid unnecessary overtreatment.

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